Conditions That Cause Hair Loss in Children Hair Loss Center Everyday Health

Conditions That Cause Hair Loss in Children Hair Loss Center Everyday Health

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Conditions That Cause Hair Loss in Children

Some hair loss is normal, but children who are losing excessive amounts of hair may have a health condition. Alopecia areata, tinea capitis, and other conditions are common causes of hair loss in children. By Krisha McCoyMedically Reviewed by Pat F. Bass III, MD, MPHReviewed: February 7, 2011Medically ReviewedAlopecia areata is a condition that causes round or oval patches of hair loss in children.
Shutterstock; Everyday HealthIt is normal for kids to shed some hair each day. But certain conditions can cause abnormal hair loss in children. In fact, hair loss in children is estimated to account for 3 percent of visits to the pediatrician.Just like adult hair, kids' hair has a fairly predictable life cycle. Each strand of kids' hair grows actively for two to six years. After that, the hair goes through a resting cycle called the telogen phase. After about three months in the telogen phase, the hair falls out and a new one grows in its place. Causes of Hair Loss in Children There are many reasons kids' hair might fall out abnormally or excessively. The following conditions are the most common causes of hair loss in children:Tinea capitis. The most common cause of hair loss in children is an infection known as tinea capitis. Tinea capitis is a type of ringworm that attacks the hair and causes scaly, ring-like lesions to form. It is a contagious fungal infection, and is commonly spread among school-aged children. Tinea capitis can affect hair of the scalp, eyebrows, and eyelashes. The area of hair loss is often flaky or scaly, and contains hairs that appear to be broken off at the surface. Most cases of tinea capitis are diagnosed by the appearance of the scalp. An ultraviolet light may be used to confirm the diagnosis. Tinea capitis is treated with antifungal medications and special shampoo for eight weeks. This condition is generally not contagious during treatment.Alopecia areata. Alopecia areata is when patches of kids' hair suddenly start falling out in a round or oval pattern. This hair loss occurs within a matter of a few days, and the bald patterns are smooth and not inflamed. Alopecia areata is thought to occur when a child's immune system mistakenly attacks her own hair follicles. This condition is relatively rare, affecting about 1 in 1,000 children at any given time. There is no specific test for alopecia areata; it is diagnosed after an examination of the scalp, and once other conditions are ruled out. Alopecia areata cannot be cured, but dermatologists can use medications to help promote hair growth. In some cases, alopecia areata will progress until all of the hair on a child's head falls out.Telogen effluvium. Telogen effluvium is a condition in which the hair life cycle is interrupted. Normally, about 10 to 15 percent of the hairs on your child's head are in the telogen phase. But in telogen effluvium, many or all hairs are thrown in to the telogen phase. After a few weeks or months, partial or complete baldness occurs. Telogen effluvium can occur for a number of reasons, including extreme fever, the stress of general anesthesia, vitamin A overdose, injury, side effects of a medication (for example, accutane), or severe emotional stress. There is no diagnostic test for telogen effluvium; it is usually diagnosed after a careful examination and medical history. This condition tends to go away on its own, and kids' hair usually grows back fully within six months to a year. 10 Surprising Things That Cause Hair Loss Hair shaft trauma. Physical stress to the hair, known as hair shaft trauma, commonly causes hair loss in children. Hair shaft trauma can result from consistent pulling of the hair (for example, tight ponytails or braids), excessive friction (like rubbing against a pillow or wheelchair), or by chemical burns to the hair shaft. It can also in occur in children who have trichotillomania, a mental condition that causes people to obsessively pull out their hair. If your child's doctor suspects hair shaft trauma, he will determine what action is causing it. Once the cause of hair shaft trauma is identified and stopped, hair will usually re-grow. But in some cases, hair shaft trauma can go on long enough to cause scarring, and hair may not grow back. If you are worried about your child's hair loss, talk to her pediatrician. The earlier the cause of the hair loss is diagnosed and treated, the more likely the treatment will be successful.
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